title: N-[3-(Benzyl-dimethyl-aza-nium-yl)prop-yl]-N',N',N'',N''-tetra-methyl-guanidinium bis-(tetra-phenyl-borate).
abstract: In the crystal structure of the title salt, C17H32N4 (2+)·2C24H20B(-), the C-N bond lengths in the CN3 unit of the guanidinium ion are 1.323 (4), 1.336 (5) and 1.337 (5) Å, indicating partial double-bond character in each. The C atom of this unit is bonded to the three N atoms in a nearly ideal trigonal-planar geometry [N-C-N angles = 117.7 (4), 120.9 (3) and 121.4 (3)°] and the positive charge is delocalized in the CN3 plane. The bonds between the N atoms and the terminal C-methyl groups of the guanidinium moiety all have values close to a typical single bond [1.452 (5)-1.484 (6) Å]. In the crystal, C-H⋯π inter-actions are present between guanidinium H atoms and the phenyl rings of both tetra-phenyl-borate ions. This leads to the formation of a two-dimensional supramolecular pattern along the ab plane.
authors.affiliation: Fakultät Chemie/Organische Chemie, Hochschule Aalen, Beethovenstrasse 1, D-73430 Aalen, Germany.
authors.forename: Ioannis
authors.initials: I
authors.lastname: Tiritiris